From 864b46be9e33f949b40d878b0de97cc3f1fcefbf Mon Sep 17 00:00:00 2001
From: Arthur Bols <arthur@bols.dev>
Date: Sun, 18 Dec 2022 21:01:48 +0100
Subject: [PATCH] [Move] Implement Move::fromUci

---
 Move.cpp | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/Move.cpp b/Move.cpp
index 226cb3f..75dec86 100644
--- a/Move.cpp
+++ b/Move.cpp
@@ -7,8 +7,23 @@ Move::Move(const Square &from, const Square &to, const std::optional<PieceType>
 }
 
 Move::Optional Move::fromUci(const std::string &uci) {
-    (void) uci;
-    return std::nullopt;
+    if (uci.length() < 4 || uci.length() > 5)
+        return std::nullopt;
+
+    std::optional<PieceType> promotion = std::nullopt;
+    if (uci.length() == 5) {
+        promotion = Piece::pieceTypeFromSymbol(uci[4]);
+        if (!promotion.has_value()) {
+            return std::nullopt;
+        }
+    }
+
+    auto from = Square::fromName(uci.substr(0, 2));
+    auto to = Square::fromName(uci.substr(2, 2));
+    if (!from.has_value() || !to.has_value())
+        return std::nullopt;
+
+    return Move(from.value(), to.value(), promotion);
 }
 
 Square Move::from() const {